Submarine projectile.



'. tail of the rightfportion `z, of usual construction'. l 60 "struction ofthe body g' not detailed here-v UNITED STATES PTENT OFFICE FRANK E. KENNEY, HoELBING AND' oNELsIxTE-ENTH To'ELLa- OF PORTLAND, OREGON, ASSIGNOE OE-ONE-HALFTO W.-

HOELBING, BOTHOF PORTLAND, OREGON.

SUBMARJNE PROJECTILE.

Speeitcatonof Letters -.Patent Patented May 23, 1916.

Application tiled August 31, 1915. Serial No. 48,358.

To all whom it may concern l Be it known that I, FRANK' E. KENNEY, a citizen of the United States, and resident of Portland, county of Multnomah, State-- of 5 Oregon, have invented a new and useful Improvement in Submarine Projectiles, of Which the `followinggis a specification. his invention relates to projectiles adaptstandard type.

me,I have disprojectile, -if water, vwill thread its Way right line, while as is Well known, any other type of projectile 15 will'not penetrate the water to any depth.l

Therefore, the object of my invention is to make use of this discovery, and to construct a submarine projectile, that is to say, a projectile which is t0 be discharged from 20 a gun mounted above the Water and 'ired into the Water, so that the projectile will keepwon its course in a right line for some distance after vit strikes the water.' VTo this end my projectilev is constructed las hereinillustrated v in the ,accompanymg' drawings f w In'the latter, Figure 'l is a longitudinal, vertical section 0f a gun, showing my subarine projectile-in the position ofbeing 30. s ot'therefrom, QFig. 2 is a larger sized-deof Fig. 1, showing one member of the projectile in section; and,A Fig 3 is a, diagrammatic vliewshowingl' the manner in which the projectile isused. j Y

` standard gun `is represented by a, b is the barrel, and c'are'the riflings olf'th'e bar- The'projectile which 'comprisesmy inven- Y tion, consists of a cylindrical tube d, adapted 4 0 to closely lit the bore ofthe barrelb.'4 Said .tube' is providedwith a'pl-urali'ty of copper packing rings e, adapted `4to engage riings of the gun and thus cause a rot-ation ofthe` project1le during Aits flight.v In the' VThe' interior' con- --spiral rib m, said rib being slightly smaller as the rotating f submarine vessel.. understood that this projectile may be adapted 'for use by sub boat destroyers.

* the projectile would assume the. characterthe 'ff therefrom,s'a id elongated a peripheral with any solid body. On the rear end of 55 in a corresponding hole of the plu Formed on the exterior of the body q-is a 6o m diameter than the inner diameter of the tube d. Furthermore, the rib formed in the same hand as the riflings of .6'5 the body g to thread lts way through the Water, instead of the 'rib m acting as a resistance. member.

The general action of the projectile'in being discharged, is shown in F ig. 3. .As'soon projectile leaves the. muzzle lthe resistance of' the-air or ofv the gun, a,

' Water will retard the tubular body d, and the l explosivemember ,o of said continue on itsilight. Y

he 'auger-like action ofthe linfojectilev body g will cause it 'to thread its way through the'water in' a right line, andthus.

projectile' will make .it a highly eficient instrument-,ofWar-- i fare, for use in combatting the atta-ek of-a' 8O Furthermore, iti-is to be marine boats, or torpedof Under -such circumstances,

` lstios of a tor edo,"a`nd would be-.projected' from a. torpe o tube under Water.

Vl. A projectile. consisting of a tubular body, provided with. circumferential means for"fitting 'the tube vtozthe bore of the gun 1 rom which` the projectilefis to 'belfired a plug closing the rear-end of vsaid tube", a cylindrical elongated; 'bodygdetachably af- Xedfto said` plug', and* rejecting axially o dyjformedwith s piral .r`ib, said'tfubejextending over-said spiral. -v

` proj-ectile-consis'tin'g`of a tubular body,

provided with circumferential means forA 100 fitting the tube to the bore of the gun from spiral, the `meansby which the elongated which the projectile is to be fired, a plug body is detachably axed to Said plug being l closing the rear end of said tube, a. eylindriadapted to cause the two parts to rotate 1o cal elongated body detachably aiiixed to said with .the same velocity while passing out plug, and projecting axially therefrom, said of the muzzle 'of the gun.

elongatedbody formed with a peripheral spiral rib,v said tube extending over said FRANK E; KENNEY. 

